As the title says; Which scholars argue that mentioning Gods name while slaughtering is not obligatory? Of course it doesn't have to be a list with all scholars ever holding that opinion, but as many as possible without making it to hard.
Some background (Maybe not relevant to the question itself):
Now, there are a few I know of like Ibn Rushd and Chams Ad-din Ar-ramli. (I guess most of the Shafi'i scholars do too, but I am not sure about that, so correct me if I am wrong.)
6:121 And do not eat of that upon which the name of Allah has not been mentioned, for indeed, it is grave disobedience. And indeed do the devils inspire their allies [among men] to dispute with you. And if you were to obey them, indeed, you would be associators [of others with Him].
Basically Ibn Rushds argument is that this verse ain't talking about mentioning Allahs name, but rather that we should not eat dead animals (mayta), which if we read the reason for this revelation (asbab nuzul), we might find that conclusion more logical:
قال المشركون : يا محمد أخبرنا عن الشاة إذا ماتت من قتلها ؟ قال الله قتلها " ، قالوا : فتزعم أن ما قتلت أنت وأصحابك حلال ، وما قتل الكلاب والصقر حلال ، وما قتله الله حرام ، فأنزل الله تعالى هذه الآية .
The polytheists said: O Muhammed! Tell us about the sheep, who is the one killing it when it dies? He said: Allah killed it. They said: So you claim that what you and your companions kills, is halal and what dogs and birds kills is halal and (then you claim) that what God kills is haram? Then the verse was reveled by God: "And do not eat of that which the name of Allah has not been mentioned"
Therefore his conclusion is that the verse is about prohibition of dead animals.
Also this famous hadith is used to prove that mentioning Allahs name is not a condition for the meat to be lawful when slaughtering:
Narrated Aisha: The people said to the Prophet (ﷺ) , "O Allah's Messenger (ﷺ)! Here are people who have recently embraced Islam and they bring meat, and we do not know whether they had mentioned Allah's Name while slaughtering the animals or not." The Prophet (ﷺ) said, "You should mention Allah's Name and eat."
Chams Ad-din Ar-ramlis understanding of that verse is that it rather means "Do not eat of that upon which the name of Allah has not been metioned (i.e other names, like Hubal, Allat, other "god" names, meaning Allahs name wasn't mentioned)
You find this mentioned in page 211 and 212 in this PDF (أثر الإختلاف في القواعد الأصولية في إختلاف الفقهاء)
So, basically, I wonder how many other (and which) scholars follow these opinions.